DEM File (Add/Properties) Dialog Box

Use this dialog box to specify or view the DEM (.dem) file and DEM file information.

DEM File Name

Specifies the file name and path for an existing DEM file. Enter the name and path or click to open the Import Surface dialog box and browse to the location of the DEM file.

Note: If you are viewing the properties of a DEM file, this field is read only.

DEM File Information

Displays the header information for the selected DEM file. For more information, see About DEM File Data.

DEM File

CS Code

Specifies the coordinate system code for the DEM file. Click to select a code in the list of coordinate systems.

Description

Displays the coordinate system description associated with CS Code.

Projection

Displays the coordinate system projection name.

Datum

Displays the coordinate system datum name.

Current Drawing

Displays the drawing coordinate system zone information. The drawing coordinate system is specified in the Drawing Settings dialog box.

CS Code

Displays the current drawings coordinate system code.

Description

Displays the current drawings coordinate system description.

Projection

Displays the current drawing coordinate system projection name.

Datum

Displays the current drawing coordinate system datum name.

Note: The points of the DEM file are transformed from the specified coordinate system of the DEM file to the coordinate system of the current drawing plus any Transformation settings specified in the Drawing Settings dialog box. DEM files cannot be transformed for grid surfaces. If you include a DEM file as part of a grid surface definition, its coordinate system must match that of the drawing, or it cannot be added.